I needed this Battery to make my DIY rumble media chair truly portable. I'm using it to power a 50w Bass Amp, a Wireless Bass Receiver, a single 1 50w Bass Shaker, and a single 7w Bass Shaker. The excitement lasts for hours and I can turn it all off with a hit of the switch. I would have gotten a version with USB but I already had a 12v to 5v step-down converter which works fine with it. Using the provided 1x female to 2x male splitter, the Battery is connected to a cigarette receptacle to easily plugin and remove an external adapter when a recharge is required.
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